science review topic 2

Which material is transparent?

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• 
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Which one of these is an old way of communication?

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• 
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Which object of these reflects light ?

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Which object of these sends a message through light?

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The card board is____________ to light .

• translucent

• transparent

• opaque

A lampshade is translucent because

• it passes some of the light.

• it passes all the light.

• it blocks the light.

We can communicate through sound using this tool

• true

• false

The dark purple light is used in the theater to make us feel

• happy

• scared

To communicate is to share information ,ideas, or news

• true

• false

The glass is transparent because

• it passes all the light.

• it passes some of the light .

• it blocks all the light.